Back by popular demand, the Grammy Award winning Oak Ridge Boys will be appealing at Northern Oklahoma College Tonkawa Thursday, Feb. 16, as part of the Renfro Spring Lectureship Series.The 2023 Front Porch Singin’ Tour marks the 50th Anniversary of The Oak Ridge Boys. The event is sponsored by the Renfro Endowed Lectureship Program and Northern Oklahoma College. The dinner will be held at the Renfro Center at 6 p.m. while the concert will be held in the Kinzer Performing Arts Center at 7:30 p.m.Tickets may be purchased on a first come, first served basis for the event beginning Thursday, Jan. 19 at 9 a.m.A reserved table with seating for eight may be purchased for $400, which includes dinner in the Renfro Center and concert in the Kinzer Performing Arts Center with preferred lower section seating.Individual tickets for the concert may be purchased at a cost of $20 each. The tickets are nonrefundable.Tickets may be purchased by credit card by calling 580-628-6214 or in person at the NOC Development Office, Vineyard Library-Administration Building, NOC Tonkawa.